S/MIME mailing solution
Fossa Guard Pro extension for desktop Chrome® enables E2E S/MIME emailing for Gmail®.
Use Fossa Guard Pro extension to sign & to encrypt your emails with X.509 certificates.
Fossa Guard Pro makes possible to import and manage private key and certificate issued by any CA including free and renewable X.509 certificates from Fossa.me
Fossa Guard Pro has own autonomous Compose dialog to avoid unsecured email content auto-saving.
Your private key is protected by pass-phrase and is replicated alongside with trusted certificates via your protected Chrome storage.